If the airport requires a call to Clearance Delivery for an IFR clearance or VFR departure, you neednt wait until you call Ground for taxi. Just tell CD. After the controller verifies your clearance readback, tell her, Ill be requesting Runway 9. Youve now informed a member of the tower team. They can let you know about any possible issues regarding that runway. Also, when you call for taxi, Ground should be aware of your needs.